Hoisting-machine or power-transmitter.



N 1 I v PATENTED JUNE 6, 1905. v

" 1 D. ABBEY.

HOISTING MACHINE OR POWER TRANSMITTER.

- APILIbATION FILED FEB.11. 1905.

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Ehwcnfoz PATENTED JUNE 6, 1905.

I 1) ABBEY. HOISTING MAOHINE'OR POWER TRANSMITTER.

APPLIGATION FILED FEB. 11. 1905.

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No. 791,529. I PATENTED JUNE 6, 1905.

I 1). ABBEY. V HOISTING MACHINE ORPOWER TRANSMITTER. APPLICATION FILED EETEB. 11.'1905.

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a i, v r a v V I No. 791,529. A

Patented June 6, 1905. i

- PATENT OF ICE.

DANIEL ABBEY, OF PHILADELPHIA, PENNSYLVANIA.

HOISTlNG-IVIACHINE OR POWER-TRANSMITTER.

SPECIFICATION forming part .of Letters Patent No. 791,529, dated June 6, 1905. Application filed February 11, 1905. Serial No. 245,294

To all whom it may cancer-n:

Be it known that I, DANIEL ABBEY, acitizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Hoisting-Machines or posite sides of the worm-shaft, thereby avoiding lateral wear on the bearings'and strain on the shaft. 7

With these ends in view the invention con sists in novel features and combinations to be described in detail in the ensuing specification and set forth in the claims.

In the accompanying drawings, illustrating forms of mechanism for carrying my invention into practical effect, Figure 1 is a side elevation of a double-drum hoist embodying my invention. Fig. 2 is a side elevation of the double-drum hoist of Fig. 1, showing additional driving connections between the worms and drum-shafts. Fig. 3 is a top plan View of the construction shown in Fig. 2, and

'Fig. 4 is an end elevation thereof.

The mechanism is mounted in any suitable frame A shown as rectangular, comprising bottom sills, uprights or standards, and crossbraces, these parts carrying the bearings for the various shafts, and within which are mounted the-worm-shaft, drum-shafts, and gear-shafts to be hereinafter referred to.

The drums B and B are keyed to stout shafts extending transversely of the frame A and mounted in suitable bearings carried thereby, the shaft of the drum B being fitted with a gear C, keyed thereto, and the shaft of the drum B being provided with a similarly-keyed worm-gear D Right and left hand worms E and E are keyed to-a shaft extending longitudinally of the frame A and mounted in suitable bearings carried thereby, the Worm E meshing with the worm-gear D .of the shaft-carrying drum B and the worm E meshing with a worm-wheel D, keyed to a transverse shaft, to which is also keyed a gear G which meshes with the gear C on the shaft carrying the drum B. From this arrangement it will be seen that both drums will be driven from the worm-gear shaft in the same direction and that as equal Work is put on the right and left hand worms E and E there will be no end thrust of the worm-shaft, since the end thrust of one worm will balance that of the other, as is well understood.

In the form shownin Fig. 2 additional wormgears D and D meshing with worms E and E, are mounted on transverse shafts beneath the worm-shaft. D is keyed a gear F which meshes with a gear F at the opposite side of the shaft of worm E and imparts motion from the opposite side of the worm E to the drums. The shaft of worm-wheel D is similarly fitted with a gear F which meshes with gear F keyed to the shaft which carries worm-gear D and drum B From this construction motion will be imparted from opposite sides of the wormshaft to drum B through gears O (J and wormgear E, and worm-gear D gears F and F and the shaftson which they are mounted and gears with which they mesh, as heretofore described. At the same time power is transmitted to the shaft of drum B through gear F on shaft of worm-wheel D and gear F on shaft of drum B so that the two drums act in unison to impart movement to a rope or cable J, which may be endless or otherwise and attached to an object to be moved.

The worm-shaft may be driven from any suitable source of power. As here shown, it is provided with a fixed pulley H and a loose pulley H H on either side thereof in order that it may be coupled with a constantly-ro On the shaft ofworm-wheel 7 tating shaft by straight and cross belts, one

running on each loose pulley, so that the direction of rotation of the worm-shaft may be instantly changed upon shifting the belts'by asuitable belt-shifter in a well-known manner.

Having thus fully described my invention,

IOG

what I claim as new, and desire to secure by Letters Patent 0f the United States, is

1. In a double-drum hoisting-machine or power-transmitter, in combination, a shaft, right and left worms mounted thereon, drumshafts, a gear-wheel mounted on one of said drum-shafts and a worm-wheel on the other, said Worm-wheel meshing with one of said worms, a transverse shaft, a gear-wheel and worm-gear mounted thereon, substantially as described.

2. In a-double-drum hoisting-machine or power-transmitter, in combination, a shaft, right and left worms mounted'thereon, a pair of transverse shafts, one of said shafts being a drum-shaft, worm-gears mounted on said transverse shafts meshing with opposite sides of one of said worms, intermeshing gears DANIEL ABBEY.

Witnesses:

HAZEL NORDEMAN, HOMER GU ERRY. 

